var argvArr=process.argv;
var exitCode=argvArr[2];
var ev=eval(exitCode);
if((typeof exitCode)=='undefined'||exitCode=='--help'||exitCode=='-h'){
    console.log('please input exitCode');
}
else if(!isNaN(parseInt(ev))){
    console.log(exitCode+"="+ev);
}

else if((typeof ev)!='number'){
    console.log("error");
}
